Pain over the hypothenar eminence especially at the ring finger, though all fingers of the same hand may be affected (thumb is never affected); increased sensitivity to cold and reduced sense of touch in affected digits[1]
Causes
multiple trauma of the fingers leading to Ischemia., Smoking, type of occupation: example carpenters, polishers, builders.
Risk factors
Regular use of vibrating tools (carpenters, mechanics, machinists) and a subset of athletics involving repeated high-impact on the hand (baseball catchers, golfers, karate, volleyball)[1]
Treatment
Nonoperative: cessation of smoking, avoid recurrent trauma; operative: endovascular fibrinolysis, excision of involved segment and reconstruction with or without a vein graft, and arterial ligation[1]
Hypothenar hammer syndrome (HHS) is a vascular occlusion in humans in the region of the ulna. It is caused by repetitive trauma to the hand or wrist (such as that caused by the use of a hammer)[2] by the vulnerable portion of the ulnar artery as it passes over the hamate bone, which may result in thrombosis, irregularity or aneurysm formation. HHS is a potentially curable cause of Raynaud's syndrome, distinct from hand–arm vibration syndrome.[3]
^"Hypothenar hammer syndrome". Archived from the original on 2016-08-11. Retrieved 2017-10-13.
^Cooke, R. A. (2003). "Hypothenar hammer syndrome: a discrete syndrome to be distinguished from hand-arm vibration syndrome". Occupational Medicine. 53 (5): 320–324. doi:10.1093/occmed/kqg071. ISSN 0962-7480. PMID 12890831.
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